travel.alot.com; author Garrett Steele
From the entry:
Being Americans, we think we're pretty awesome. Across the globe, not everyone will agree with that sentiment, however. If you don't want to stick out like a sore thumb, try to avoid these stereotypical aspects of an average American traveler.[JB -- among the images/text in the entry]
3. Trying Someone Else's Accent
Of course, when you're trying not to sound American, that's when you sound most American. We're notorious for being convinced that we can sound just like the people we're around, and that's when we break out an Australian accent in London or a Northern accent in Wales. If you try this in the U.K., you should know that being compared to Dick van Dyke is not a compliment in this context.